AAVSO Observer Code
American Association of Variable Star Observers (AAVSO)
Full Name
Timothy Crawford
Arch Cape, OR, US
Background/Interesting Fact
Member Since 2001

Sequence Team Member
Former Mentoring Team Member
Former Speakers Bureau Member
Former Telescope Allocation Committee Member
Nominating Committee Member, 2009
Nominating Committee Chairperson, 2012 & 2013

Earned a 100,000 CCD Observations Certificate, 2010
Earned a 100 Visual Observations Certificate, 2020 ;-)

Recipient of the 2012 William Tyler Olcott Distinguished Service Award:


Field Use Review of Celestron's 9.25" New Advanced Series GT, Rose City Astronomers, Rosette Gazette, January, 2004
Variable Star Observing, Rose City Astronomers, Rosette Gazette, July 2005
My First Variable-Star Observation – A series of Misadventures Journal of the Royal Astronomical Society of Canada, June 2006, Volume 100 No 3
Contribute To Science by Observing Variable Stars, Amateur Astronomy, Spring 2006,No 49
Sideral Time, AAVSO Eyepiece Views, March, 2007
Playing with a 1.82 Meter Scope Doing Spectroscopy, Rose City Astronomers, Rosette Gazette, January, 2008
The Roll-Off Roof Design vs Dome Style Observatories, Rose City Astronomers, Rosette Gazette, November 2008
Contributing To Science with Your CCD Equipment, Amateur Astronomy, Summer 2009, No 68

Detection of the First Observed Outburst of DW Cancri
JAAVSO Volume 36, No 1, 2008

The History of AAVSO Charts, Part III: the Henden Era
JAAVSO Volume 47, 2019

CO-Author, Papers:
Muticolor Observations of ASAS 002511+1217.2; 12th Young Scientists' Conference on Astronomy and Space Physics, held in Kyiv, Ukraine, April 19-23, 2005, Eds.: Simon, A.; Golovin, A., Kyiv University Press, p. 49.
The Recently-Discovered Dwarf Nova System ASAS J002511+1217.2: A New WX Satittae Star; Publication: The Publications of the Astronomical Society of the Pacific, Volume 118, Issue 840, pp. 236-245. February 2006.
The Detection of the WZ Sge-Type Nature of the Dwarrf Novae ASAS 023322-1047.0 and ASAS 102522-1542.4; The Society for Astronomical Sciences 25th Annual Symposium on Telescope Science. Held May 23-25, 2006, at Big Bear, CA. Published by the Society for Astronomical Sciences., p.77.
SDSS J102146.44+234926.3: New WZ Sge-type dwarf nova; Information Bulletin on Variable Stars, No. 5763, #1. April 2007.
SS Cyg Outburst Predictors and Long Term Quas-Periodic Behavior; Publications of the Astronomical Society of the Pacific, Volume 119, issue 862, pp.1361-1366, December 2007.
Periodicites in the high-mass X-ray binary system RX J0146.9+6121/LS1+61 235; Monthly Notices of the Royal Astronomical Society, Volume 392, Issue 3, January 2009, Pages 1242–1252. January 20096.
VSX J074727.6+065050: A new WZ Sagittae star in Canis Minor; the Journal of the British Astronomical Association, May 2009.
Modern observations of Hubble's first-discovered Cepheid in M31; PASP, Vol 123, PP 1374, 2011.
Photometry of Hubble's First Cepheid in the Andromeda Galaxy, M31; The Society for Astronomical Sciences 31st Annual Symposium on Telescope Science, held May 22-24, 2012 at Big Bear Lake, CA. Edited by Brian D. Warner, Robert K. Buchleim, Jerry L. Foote, and Dale Mais. Published by Society for Astronomical Sciences, 2012., pp.3-6.

Some Personalities from Variable Star History, Williams and Saladyga, JAAVSO Volume 43,2015.
CHOICE Courses Completed
How to use VPhot 2014-04-16
Variable Star Classification and Light Curves 2014-10-15